<template>
  <div class="icon-dialog">
    <el-dialog
        v-model="visible"
        width="980px"

        @open="onOpen"
        @close="onClose"
    >
      <div slot="title">
        选择图标
        <el-input
            v-model="key"
            size="mini"
            :style="{ width: '260px' }"
            placeholder="请输入图标名称"
            prefix-icon="el-icon-search"
            clearable
        />
      </div>
      <ul ref="iconWrap" class="icon-ul">
        <li
            v-for="icon in iconList"
            :key="icon"
            :class="active === icon ? 'active-item' : ''"
            @click="onSelect(icon)"
        >
          <i :class="icon"/>
          <div>{{ icon }}</div>
        </li>
      </ul>
    </el-dialog>
  </div>
</template>
<script>
import iconList from '@/utils/icon.json';

const originList = iconList.map((name) => `el-icon-${name}`);

export default {
  inheritAttrs: false,
  props: ["current", "visible"],
  data() {
    return {
      iconList: originList,
      active: null,
      key: "",
    };
  },
  watch: {
    key(val) {
      if (val) {
        this.iconList = originList.filter((name) => name.indexOf(val) > -1);
      } else {
        this.iconList = originList;
      }
    },
  },
  methods: {
    onOpen() {
      this.active = this.current;
      this.key = "";
      this.scrollToActive();
    },
    onClose() {
    },
    onSelect(icon) {
      this.active = icon;
      this.$emit("select", icon);
      this.$emit("update:visible", false);
    },
    scrollToActive() {
      this.$nextTick(() => {
        const $activeItem = setIcon
            ? document.getElementsByClassName("active-item")[0]
            : this.$refs.iconWrap.childNodes[0];
        $activeItem && $activeItem.scrollIntoView && $activeItem.scrollIntoView();
      });
    },
  },
};
</script>
<style lang="scss" scoped>
.icon-ul {
  margin: 0;
  padding: 0;
  font-size: 0;

  li {
    list-style-type: none;
    text-align: center;
    font-size: 14px;
    display: inline-block;
    width: 16.66%;
    box-sizing: border-box;
    height: 108px;
    padding: 15px 6px 6px 6px;
    cursor: pointer;
    overflow: hidden;

    &:hover {
      background: #f2f2f2;
    }

    &.active-item {
      background: #e1f3fb;
      color: #7a6df0;
    }

    > i {
      font-size: 30px;
      line-height: 50px;
    }
  }
}

.icon-dialog {
  ::v-deep(.el-dialog) {
    border-radius: 8px;
    margin-bottom: 0;
    margin-top: 4vh !important;
    display: flex;
    flex-direction: column;
    max-height: 92vh;
    overflow: hidden;
    box-sizing: border-box;

    .el-dialog__header {
      padding-top: 14px;
    }

    .el-dialog__body {
      margin: 0 20px 20px 20px;
      padding: 0;
      overflow: auto;
    }
  }
}
</style>
